U.S. patent number 4,784,306 [Application Number 07/071,647] was granted by the patent office on 1988-11-15 for high-load fastener packs for use with the magazines of fastener driving tools.
This patent grant is currently assigned to Senco Products, Inc.. Invention is credited to Howard L. Baum.
United States Patent |
4,784,306 |
Baum |
November 15, 1988 |
High-load fastener packs for use with the magazines of fastener
driving tools
Abstract
High-load fastener packs and magazine assemblies for otherwise
conventional fastener driving tools to greatly increase the
magazine capacity. Each fastener pack contains a plurality of
fasteners arranged in strips. The magazine is provided on one side
with an opening for communication with the fastener pack. The
fastener pack is readily attachable to and detachable from the
magazine. A spring device within the fastener pack urges the
fastener strip nearest the magazine into the guiding channel of the
magazine when the adjacent portion of the magazine channel is free
of fasteners. A substantially conventional pusher element on the
magazine urges the fastener strips forwardly and the forwardmost
fastener into the drive track of the tool guide body.
Alternatively, the guide body of the tool may be provided with a
conventional pulling mechanism to advance the forwardmost fastener
in the magazine into the drive track. When a pulling mechanism is
used, each fastener strip is provided with flexible hook-like
elements. A hook-like element of tone fastener strip engages the
hook-like element of the next suceeding fastener strip, advancing
that fastener strip toward the drive track.
Inventors: |
Baum; Howard L. (Cincinnati,
OH) |
Assignee: |
Senco Products, Inc.
(Cincinnati, OH)
|
Family
ID: |
22102677 |
Appl.
No.: |
07/071,647 |
Filed: |
July 9, 1987 |
Current U.S.
Class: |
227/113; 227/120;
227/130 |
Current CPC
Class: |
B25C
1/005 (20130101) |
Current International
Class: |
B25C
1/00 (20060101); B25C 001/04 () |
Field of
Search: |
;227/109,120,132,118,117,116,113 |
References Cited
[Referenced By]
U.S. Patent Documents
Foreign Patent Documents
Primary Examiner: Bell; Paul A.
Attorney, Agent or Firm: Frost & Jacobs
Claims
What is claimed is:
1. A fastener driving tool having a body with a forward portion, a
reciprocating driver within said body forward portion, means to
actuate said driver, a guide body mounted beneath said body forward
portion having a drive track for said driver, an elongated fastener
magazine having a forward end affixed to said guide body and having
a fastener guiding channel leading to said drive track, and means
associated with said tool to urge and advance fasteners within said
magazine to said drive track, said magazine comprising first and
second sides in parallel spaced relationship connected along their
bottom edges to form a U-shaped cross section constituting said
fastener guiding channel, said first magazine side having an
opening formed therein leading to said channel, said opening
extending partway into said tool body, a high-load fastener pack
comprising a box-like structure, a plurality of fasteners in said
pack, said fasteners being arranged in strips in side-by-side
relationship, each strip comprising a tandem row of fasteners and
means to temporarily join them together, means to releasably affix
said pack to said tool in communication with said opening and said
magazine channel, said pack having an opening leading to said
magazine channel, and means within said pack to urge said fastener
strips laterally toward said magazine.
2. The fastener driving tool claimed in claim 1 wherein said pack
comprises a top, a bottom, first and second sides and forward and
rearward ends, said pack forward end having a vertical notch
therein adjacent said first side and extending from said top to
said bottom through which said fastener strips can pass
one-at-a-time, said rearward end having a notch therein adjacent
said first side and extending from said top to a point
approximately at the longitudinal median line of said first side,
said first side having a longitudinal slot therein extending from
said pack top approximately to said longitudinal median line and
from said rearward end notch to said forward end notch, said pack
being so sized with respect to said opening as to be partially
receivable therein first side foremost with said forward end notch
aligned with said magazine channel, said means to urge and advance
said fasteners to said drive track comprising a conventional pusher
element slidably mounted on said second side of said magazine and
spring biased toward said guide body, said pusher element having a
feeder shoe member thereon adopted to engage that fastener strip
adjacent the first side of said fastener pack and to urge said last
mentioned fastener strip from said pack into said channel to said
drive track, said notches in said forward and rearward ends of said
pack and said slot in said first side of said pack providing
clearance for said feeder shoe member.
3. The fastener driving tool claimed in claim 2 wherein said
opening in said magazine is provided along its bottom edge and its
forward and rearward ends with laterally extending walls comprising
a trough to receive and support said fastener pack.
4. The fastener driving tool claimed in claim 2 wherein said
fasteners are chosen from the class consisting of nails, staples
and blind rivets.
5. The fastener driving tool claimed in claim 2 wherein said
fasteners are nails.
6. The fastener driving tool claimed in claim 2 including a
magnetic rail affixed to said tool body above said second side of
said magazine, said magnetic rail contacting said fastener strip
adjacent said first side of said fastener pack to maintain said
last mentioned strip in proper alignment with respect to said
magazine channel.
7. The fastener driving tool claimed in claim 2 wherein said
fasteners are headed nails, said fastener pack bottom being
configured to maintain said fastener strip adjacent said pack first
side at a level slightly lower than the level of the remainder of
the fastener strips so that the heads of the nails of said strip
adjacent said pack first side contact the shanks of the nails of
the adjacent fastener strip just below their heads, and a cam
surface in said tool to urge said fastener strip adjacent said pack
first side to said lower position.
8. The fastener driving tool claimed in claim 2 wherein said
opening in said magazine and tool body has the configuration of a
parallelogram and said fastener pack in side elevation also has the
configuration of a parallelogram.
9. The fastener driving tool claimed in claim 2 wherein said
opening in said magazine and tool body is retangular and said
fastener pack in side elevation is correspondingly rectangular.
10. The fastener driving tool claimed in claim 1 wherein said pack
comprises a container member and a cover member, said container
member comprising a first side wall, a bottom, forward and rearward
ends, and a top extending approximately half way across the upper
edges of said forward and rearward ends, said pack top having a
free longitudinal edge terminating in an upstanding hook-like
structure extending the length of said pack, said pack bottom
having a free longitudinal edge terminating in a downwardly
extending hook-like structure extending the length of said pack,
said cover member having first and second parts, said first part
comprising the second side wall of said pack, said second side wall
having an upper edge terminating in said second part comprising the
remainder of said pack top, said first part of said cover member
having a free edge slidably received in said downwardly extending
hook-like structure, said second part of said cover member
terminating in an upstanding flange slidably received in said
upstanding hook-like structure, said magazine having a bottom edge
with a longitudinal slot formed therein extending from the rearward
end thereof to a point near the forward edge of said opening, said
tool body having a flange formed thereon extending from the
rearward end thereof above said opening to a point near the forward
edge of said opening, said flange defining a longitudinal slot in
said body, said upstanding hook-like structure of said fastener
pack container member being engagable in said body slot, said
downwardly extending hook-like structure being engagable in said
magazine slot, said fastener pack container member being slidable
along said slots from the rearward end of said tool to said
position in communication with said opening simultaneously sliding
said cover member off of said container member.
11. The fastener driving tool claimed in claim 10 wherein said
fasteners are chosen from the class consisting of nails, staples
and blind rivets.
12. The fastener driving tool claimed in claim 10 wherein said
fasteners are nails.
13. The fastener driving tool claimed in claim 10 including a
magnetic rail affixed to said tool body above said second side of
said magazine, said magnetic rail contacting said fastener strip
entering said magazine channel from said pack to maintain said last
mentioned strip in proper alignment with respect to said magazine
channel.
14. The fastener driving tool claimed in claim 3 wherein said
fasteners are headed nails, said fastener pack bottom when said
container member is affixed to said tool being slightly higher than
said magazine channel, cam surface means in said tool to shift that
fastener strip entering said magazine channel from said pack
container member downwardly so that said heads of said nails of
said last mentioned fastener strip contact the shanks of the nails
of the adjacent fastener strip just below their heads.
15. The fastener driving tool claimed in claim 10 wherein said
opening in said magazine and tool body has the configuration of a
parallelogram and said fastener pack in side elevation also has the
configuration of a parallelogram.
16. The fastener driving tool claimed in claim 10 wherein said
opening in said magazine and tool body is retangular and said
fastener pack in side elevation is correspondingly rectangular.
17. The fastener driving tool claimed in claim 10 wherein each
fastener strip in said pack has means thereon whereby as it is
urged and advanced to said drive track by said urging and advancing
means said strip will engage and pull the next adjacent strip along
said magazine channel toward, said drive track.
18. The fastener driving tool claimed in claim 17 wherein said
fastener strips comprise nails joined together by tape strips
extending along the nail shanks on either side thereof in parallel
opposed position, said means on each of said fastener strips to
engage and pull the next succeeding strip comprises a flexible
hook-like structure at the forward end and at the rearward end of
each fastener strip, each hook-like structure being affixed to one
of said tapes, said hook-like elements being so oriented that the
rearward hook-like element of one strip will engage the forward
hook-like element of the next succeeding strip to shift said
succeeding strip.
19. The fastener driving tool claimed in claim 17 wherein said
fastener strips comprise nails joined together by tape strips
extending along the nail shanks on either side thereof in parallel
opposed position, said means on each of said fastener strips to
engage and pull the next succeeding strip comprises a window formed
in said tapes adjacent the shank of the forwardmost nail of said
strip and a flexible hook-like element affixed to one of said tapes
at the rearward end of said strip, said hook-like element being so
oriented that the hook-like element of one strip will enter said
window of the next succeeding strip and engage the shank of the
forwardmost nail thereof to shift said succeeding strip.
20. The fastener driving tool claimed in claim 1, wherein said pack
comprises a top, a bottom, first and second sides and forward and
rearward ends, said pack forward end having a vertical notch
therein adjacent said first side and extending from said top to
said bottom through which said fastener strips can pass
one-at-a-time, said pack being so sized with respect to said
opening as to be partially receivable therein first side foremost
with said forward end notch aligned with said magazine channel,
each fastener strip having means thereon whereby as it is urged and
advanced to said drive track by said urging and advancing means
said strip will engage and pull the next adjacent strip from said
pack into said magazine channel.
21. The fastener driving tool claimed in claim 20 wherein said
fastener strips comprise nails joined together by tape strips
extending along the nail shanks on either side thereof in parallel
opposed position, said means on each of said fastener strips to
engage and pull the next succeeding strip comprises a flexible
hook-like structure at the forward end and at the rearward end of
each fastener strip, each hook-like structure being affixed to one
of said tapes, said hook-like elements being so oriented that the
rearward hook-like element of one strip will engage the forward
hook-like element of the next succeeding strip to shift said
succeeding strip.
22. The fastener driving tool claimed in claim 20 wherein said
fastener strips comprise nails joined together by tape strips
extending along the nail shanks on either side thereof in parallel
opposed position, said means on each of said fastener strips to
engage and pull the next succeeding strip comprises a window formed
in said tapes adjacent the shank of the forwardmost nail of said
strip and a flexible hook-like element affixed to one of said tapes
at the rearward end of said strip, said hook-like element being so
oriented that the hook-like element of one strip will enter said
window of the next succeeding strip and engage the shank of the
forwardmost nail thereof to shift said succeeding strip.
23. The fastener driving tool claimed in claim 1 wherein said
fasteners are chosen from the class consisting of nails, staples
and blind rivets.
24. The fastener driving tool claimed in claim 1 wherein said
fasteners are nails.
25. The fastener driving tool claimed in claim 1 wherein said pack
is disposable.
26. The fastener driving tool claimed in claim 1 wherein said pack
is reusable and refillable.
27. The fastener driving tool claimed in claim 1 wherein said
driver actuating means is chosen from the class consisting of
pneumatic means, electromechanical means and internal combustion
means.
28. The fastener driving tool claimed in claim 1 wherein said pack
is disposable.
29. The fastener driving tool claimed in claim 1 wherein said pack
is reusable and refillable.
Description
TECHNICAL FIELD
The invention relates to high-load fastener packs and magazine
assemblies for otherwise conventional fastener driving tools, and
more particularly to packs containing a plurality of fasteners in
strips and adapted to be removably attachable to modified
magazines, to greatly increase the capacity of the magazines.
BACKGROUND ART
The teaching of the present invention are applicable to any
appropriate fastener driving tool for fasteners of the type which
can be arranged in rows, one-behind-the-other, and temporarily
maintained in such rows to form strips of fasteners. Nails, staples
and blind rivets are exemplary of such fasteners. While not
intended to be so limited, for purposes of describing exemplary
embodiments, the present invention will be set forth in its
application to nail driving tools.
Prior art workers have devised numerous types of powered nail
driving tools. The most common type is the pneumatically actuated
nail driving tool of which the one described in U.S. Pat. No.
4,030,655 is exemplary. More recently, there has been considerable
interest in electromechanical nail driving tools wherein the driver
is actuated by a solenoid, one or more flywheels, or the like. U.S.
Pat. No. 4,375,867 is exemplary of those patents relating to
solenoid-actuated nail driving tools. U.S. Pat. Nos. 4,121,745;
4,189,080; and 4,298,072 are exemplary of those teaching
flywheel-actuated nail driving tools. Finally, prior art workers
have also devised self-contained internal combustion nail driving
tools. Examples of such tools are taught in co-pending application
Ser. No. 881,339, filed July 2, 1986 in the name of Gilbert A.
Cotta, and entitled SELF-CONTAINED INTERNAL COMBUSTION FASTENER
DRIVING TOOL; and in co-pending application Ser. No. 881,343, filed
July 2, 1986, in the name of Gilbert A. Cotta, and entitled
CAM-CONTROLLED SELF-CONTAINED INTERNAL COMBUSTION FASTENER DRIVING
TOOL. The teachings of the present invention are appllicable to any
of these types of tools provided with substantially conventional
magazines and guide bodies.
For purposes of an exemplary showing, the present invention will be
described in its application to a conventional pneumatic nail
driving tool, of the general type taught in the above noted U.S.
Pat. No. 4,030,655. Typically, pneumatic nail driving tools,
particularly those capable of driving large nails with a single
stroke of the driver, are characterized by relatively large size
and considerable weight. Generally, such nailers have magazines
which extend from the rearward end of the tool to the guide body at
the lower forward end of the tool. The magazines are usually
configured to accommodate a strip of nails constituting nails
arranged in a tandem row and held in place by tape or disposable
wire elements welded to each nail shank along the length of the
strip. The number of nails per load is limited to the length of the
magazine and in continuous or high speed operations, considerable
time is consumed in replenishing the supply of nails for such a
tool. As a result, prior art workers have investigated numerous
ways to increase the capacity of the tool magazine without
materially increasing the weight or bulk of the tool. One approach
involves the use of a canister-type magazine adapted to receive a
coil of nails. An example of such a tool is taught in U.S. Pat. No.
3,945,551. Another approach involves the use of a very long strip
of nails housed in a separate canister remote from the tool. An
example of this approach is taught in U.S. Pat. No. 3,684,339.
Yet other approaches are taught in U.S. Pat. No. 3,437,249. In this
patent, one embodiment employs a longitudinal magazine having an
opening in its side flanked by a pair of laterally extending
support members. The support members are provided with grooves
adapted to receive the heads of the forwardmost and rearwardmost
nails of each of a plurality of nail strips. A first pusher means
introduces the strips, one at a time, into the longitudinal
magazine wherein pusher means advances each strip toward the drive
track, one-after-the-other. In another embodiment, a longitudinally
extending magazine, forming a guideway to the drive track, is
provided with a transverse opening in which a carrier is located.
The carrier, itself, is divided into a plurality of channels, each
containing a nail strip. The carrier is indexable through the
magazine, aligning each of its channels with the magazine guideway
so that each strip of nails, in its turn, can be loaded into the
magazine guideway from the carrier, as the carrier is shifted
transversely of the magazine.
The present invention is based upon the discovery that a plurality
of strips of nails can be prepackaged in a high-load nail pack. The
pack can be removably affixed to the side of a longitudinal
magazine having a guideway to the drive track and an opening in its
side adjacent the nail pack. Biasing means within the nail pack
will urge the strips of nails toward the magazine, with that strip
adjacent the magazine entering the magazine and being urged toward
the drive track by a conventional pusher means. When one strip of
nails is exhausted, retraction of the pusher means will enable the
next strip of nails to be located within the magazine guideway.
While the nail packs of the present invention can be made to be
reusable and refillable, it is preferred that they be made of
plastic or cardboard material for disposal after use. In this way,
the capacity of the magazine of the nail dirving tool can be
greatly increased with a minimum of increase in the weight or bulk
of the tool. The nail packs provide an easy and handy way to market
and store strips of nails until used. The teachings of the present
invention are applicable to those types of pneumatic nail driving
machines which either pull the nail strips toward the drive track,
or push the nail strips toward the drive track, as will be
explained hereinafter.
DISCLOSURE OF THE INVENTION
According to the invention there is provided a high-load nail pack
and magazine assembly for otherwise conventional nail driving
tools. Each nail pack contains a plurality of nail strips in
side-by-side arrangement. The magazine extends from the rearward
end of the tool to the guide body at the forward end of the tool
and provides a channel or guideway for the nail strips to the drive
track within the tool guide body. The magazine, on one side, is
provided with an opening adapted to cooperate with the nail pack.
In one embodiment, the opening is adapted to receive a portion of
the nail pack, which is inserted therein. In another embodiment,
the nail pack engages a pair of slots extending along the magazine
and slides along the magazine until it is positioned opposite the
opening therein. In either embodiment, the nail pack is readily
attachable to and detachable from the magazine.
Biasing means are provided within the nail pack to urge that nail
strip nearest the magazine into the magazine guideway when the
adjacent portion of the magazine guideway is free of nails.
In one embodiment of the invention, the magazine is provided with a
substantially conventional pusher element which urges the nail
strips toward the guide body and the forwardmost nail thereof into
the drive track. In another embodiment, the nail driving tool is
provided with nail advancing means, known per se, in association
with the guide body and capable of pulling the nail strips toward
the guide body and shifting the forwardmost nail thereof into the
drive track. When the nail driving tool is provided with a pulling
mechanism in association with the guide body, each nail strip is
provided with flexible hook elements adapted to engage and advance
the next succeeding nail strip.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a side elevational view of an exemplary prior art
pneumatic nail driving tool to which the teachings of the present
invention may be applied.
FIG. 2 is a fragmentary left side elevational view of the magazine
of the tool of FIG. 1, modified in accordance with the teachings of
the present invention.
FIG. 3 is a fragmentary right side elevational view of the magazine
of FIG. 2.
FIG. 4 is a fragmentary cross-sectional view taken along section
line 4--4 of FIG. 2 and illustrating a nail pack mounted on the
magazine.
FIG. 5 is a side elevational view of the nail pack of FIG. 4.
FIG. 6 is an end elevational view of the nail pack of FIG. 5 as
seen from the right thereof.
FIG. 7 is a cross-sectional view taken along section line 7--7 of
FIG. 5.
FIG. 8 is a plan view of the nail pack of FIG. 5.
FIG. 9 is a cross-sectional view taken along section line 9--9 of
FIG. 5.
FIG. 10 is a fragmentary right side elevational view of a magazine,
similar to FIG. 3, but constituting the magazine of another
embodiment of the present invention.
FIG. 11 is a fragmentary cross-sectional view taken along section
line 11--11 of FIG. 10 and illustrating another embodiment of nail
pack affixed to the magazine.
FIG. 12 is a transverse cross-sectional view through the nail pack
of FIG. 11, illustrating the closure member therefor.
FIG. 13 is a fragmentary side elevational view of another
embodiment of nail pack for use with a nail driving tool of the
type which has a nail feed mechanism in association with its guide
body.
FIG. 14 is a fragmentary cross-sectional view, taken along section
line 14--14 of FIG. 13.
FIG. 15 is a fragmentary elevational view of the forward end of
another embodiment of nail strip.
FIG. 16 is a fragmentary plan view of a pair of nail strips of the
type shown in FIG. 15 illustrating the engagement of the following
strip by the leading strip.
FIG. 17 is a fragmentary plan view of the strips of FIG. 16,
illustrating the following strip in substantial alignment with the
leading strip.
DETAILED DESCRIPTION OF THE INVENTION
Reference is first made to FIG. 1 wherein an exemplary pneumatic
nail driving tool, of the type taught in the above mentioned U.S.
Pat. No. 4,030,655, is shown. The tool, generally indicated at 1,
comprises a body generally indicated at 2. The body 2, in turn,
comprises a main forward portion 2a and a rearward portion 2b. The
rearward portion has an opening 3 formed therein, defining a handle
portion 2c. The lower end of the forward portion 2a is provided
with a guide body 4. A magazine 5 extends along the length of the
bottom of the tool body 2, from the rearward end thereof to the
guide body 4.
The body 2 is generally hollow, and the upper rearward end is
provided with an opening (not shown) for attachment by means of a
flexible hose to a source of air under pressure. The forward or
main body portion 2a contains a cylinder having a piston attached
to a driver. The upper end of the cylinder is closed by a main
valve which, when open, admits air under pressure into the
cylinder, driving the piston and driver downwardly through the
guide body, to drive the forwardmost nail from the magazine into a
workpiece. The main valve, itself, is controlled by a remote valve,
which is actuated by manual trigger 6. The tool 1 is provided with
a workpiece responsive trip 7 which, when in its normal unactuated
position, disables the manual trigger 6. On the other hand, when
the workpiece responsive trip 7 is pressed against the workpiece to
be nailed, it enables the manual trigger 6 so that the tool can be
actuated. Thus, the workpiece responsive trip constitutes a safety
device which must be pressed against the workpiece before the tool
will operate.
The guide body 4 forms a drive track for the tool driver. The guide
body may be provided with a front gate 4a and an associated latch
mechanism 4b for access to the drive track, should the tool for any
reason become jammed.
The magazine 5 is affixed at its forward end to the guide body 4.
At its rearward end, the magazine 5 is supported by a plate 8 which
is also affixed to the rear end of the tool body 2. The magazine
comprises an elongated member of generally U-shaped cross-section,
defining a guideway or channel for the strip of nails 9. The
magazine channel leads to an opening in the rearward face of guide
body 4, which, in turn, leads to the drive track. The magazine is
provided with a pusher element 10 slidably mounted thereon. The
pusher element carries a spring biased feeder shoe member 11
adapted to engage the rearwardmost nail of the strip to urge the
strip forwardly toward the guide body and to locate the forwardmost
nail of the strip within the drive track. A strip of nails is
illustrated in FIG. 1 at 9. The feeder shoe member 11 is hingedly
affixed to pusher element 10 as at 13 and 14. The feeder shoe
member 11 has at its rearward end an extension or lever 15
accessible through an opening 16 in pusher element 10. By
depressing the lever 15 it is possible to swing the feeder shoe
member 11 out of engagement with the strip of nails during a nail
unloading operation. The nail strip can be loaded into magazine 5
or removed from magazine 5 through an appropriate port (not shown)
in rear plate 8.
Pusher element 10 is constantly urged forwardly by a strip-type
coil spring 17 which seeks to coil itself about a spool element 18
affixed to the rearward surface of guide body 4. When the strip of
nails 9 is exhausted, a new strip may be inserted through the port
in plate 8 and shifted toward guide body 4. The pusher element 10
is shifted rearwardly past the strip of nails to such a position
wherein the feeder shoe member 11 can engage the rearwardmost nail
of the strip. As the pusher element 10 is shifted rearwardly, the
feeder shoe member 11 will swing out of the way, riding along the
strip of nails until its spring biasing causes it to shift behind
the last nail of the strip. At this point, the tool is reloaded and
ready for use. The upper portion of pusher element 10 slidably
engages about a rail 19 bolted or otherwise appropriately affixed
to the tool body 2 and extending substantially the length of
magazine 5. The lower portion of pusher element 10 rides a slot 20a
formed by an elongated flange 20 constituting an integral part of
magazine 5 and again extending the majority of the length
thereof.
It will be appreciated from the above brief description that the
number of nails with which the tool 1 can be loaded is limited by
the length of magazine 5. It can therefore be appreciated that it
would be advantageous to increase the capacity of magazine 5
without significantly adding to the weight or bulk of tool 1.
Reference is now made to FIGS. 2 and 3. FIGS. 2 and 3 illustrate,
respectively, the left and right side of a magazine similar to
magazine 5 of FIG. 1 and modified in accordance with the teachings
of the present invention. It will be understood that the magazine
of FIGS. 2 and 3 is intended to be affixed to a tool substantially
otherwise identical to tool 1 of FIG. 1, and where applicable, like
parts have been given like index numerals. Reference is
additionally made to FIG. 4 which is a cross-sectional view taken
along section line 4--4 of FIG. 2. The magazine of FIGS. 2, 3 and 4
is designated by index numeral 5a and comprises an elongated member
of U-shaped cross-section having a left wall 21 and a right wall 22
defining a nail strip receiving guideway or channel 23. The
magazine 5a is affixed to plate 8 by any appropriate means such as
welding or the like, or may constitute an integral one-piece part
thereof. As is most clearly shown in FIG. 2, the left side 21 of
magazine 5a is provided with a series of elongated ports 24 so that
a nail strip 9 located therein is visible. The left side 21 of
magazine 5a is provided with elongated flange 20, as in FIG. 1,
providing the slot or groove 20a in which the lower portion of
pusher element 10 rides.
As can be seen in FIGS. 3 and 4, the upper rail 19 of FIG. 1 has
been replaced by a magnetic rail 25 and a shim element 26 to be
described in greater detail hereinafter. The magnetic rail 25 and
shim element 26 are affixed to the body 2 of tool 1 by machine
screws, bolts or the like (not shown). Again, as is evident from
FIG. 4, the upper portion of pusher element 10 slidably engages the
magnetic rail 25.
The right side 22 of magazine 5a is similar to the right side (not
shown) of the magazine 5 of FIG. 1. The right side 22 of magazine
5a is provided with a series of ports 27. The primary difference
between magazine 5a and magazine 5 of FIG. 1 lies in the fact that
a relatively large opening 28 of parallelogram configuration is
formed in the right side 22 of magazine 5a and the right side of
the tool body 2 (see FIG. 3). That part of the opening 28 formed in
the right side 22 of magazine 5a is indicated by index numeral 28a.
That part of opening 28 formed in the tool body 2 is indicated by
index numeral 28b. The opening 28 is of parallelogram configuration
so that its ends will be substantially vertical with respect to the
workpiece when the tool 1 is in the position illustrated in FIG. 1.
That portion of opening 28 formed in the right side 22 of magazine
5a is surrounded by a bottom wall 29 and end walls 30 and 31 which
form a sort of laterally extending trough.
The opening 28 with its parts 28a and 28b, and the trough-like
structure 29-30-31 are intended to receive a nail pack 32, as shown
in FIG. 4. The nail pack 32 is illustrated by itself in FIGS. 5-9.
Nail pack 32 comprises a box-like structure having a top 33, a
bottom 34, side walls 35 and 36, a forward end 37 and a rearward
end 38. As is most clear from FIG. 5, the nail pack 32 is of
parallelogram configuration, the top 33 and the bottom 34 being
parallel and the ends 37 and 38 being parallel. It will be noted
that the forward end 37 and the rearward end 38 slope upwardly and
rearwardly, as viewed in FIGS. 5 and 8. The rearward end 38 has a
notch 39 formed therein (see FIG. 7) to provide clearance for
pusher element member 11. The forward end 37 (see FIGS. 6, 8 and 9)
has a similar notch 40 formed therein for the same purpose. The
notch 40, however, has an extended portion 41 terminating at the
nail pack bottom 34. The notches 40 and 41 and front wall 37
constitute an opening through which nail strips contained within
the nail pack 32 pass, one-by-one, from the nail pack to the
guideway or channel 23 of magazine 5a. It will be noted that side
wall 35 extends upwardly from the nail pack bottom 34 to the notch
40 in front wall 37 and the notch 39 in rear wall 38, again
providing clearance for the pusher element member 11.
The nail pack 32 can be made of any appropriate material, including
metal, plastic, cardboard, or the like. While the nail pack can be
reusable and refillable, it lends itself well to being disposable.
Plastic, cardboard or the like constitute preferred materials from
which nail pack 32 is made since they are inexpensive materials and
will add little weight to the tool 1 when the nail pack is affixed
thereto. It will be understood by one skilled in the art that the
nail pack may have an appropriate removable overwrap or the like to
prevent loss of nails therefrom during shipment and storage.
The embodiment of FIGS. 1-9 having been described in detail, its
operation can now be set forth. Assuming that the tool 1 is empty
of nails and the pusher element 10 is in its forwardmost position,
it is only necessary for the operator to obtain a nail pack and
remove therefrom its outer wrapping. The nail pack is then inserted
(side 32 foremost) into the opening 28 in magazine 5a and tool body
2. The nail pack is just nicely received within the opening and
within the trough 29-30-31. Appropriate latch means (not shown) may
be provided to releasably maintain the nail pack in the position
shown in FIG. 4. When in this position, it will be noted that the
slot 41 in the forward end 37 of nail pack 32 aligns with the
guideway or channel 23 of magazine 5a.
In FIG. 4, for purposes of an exemplary showing, nail pack 32 is
illustrated as containing seven strips of nails 42a through 42g.
The width of nail pack 32 and the number of nail strips located
therein can be varied and does not constitute a limitation on the
present invention. Each of the nail strips can be of the type
described with respect to nail strip 9 of FIG. 1. In an exemplary
and well known nail strip, the nails of each strip are held
together by tape. The nail heads are staggered vertically and each
nail head is provided with a notch to receive the shank of the next
succeeding nail.
Nail pack 32 is preferably provided with means to bias the strips
of nails toward nail pack side 35. The biasing means can take any
appropriate form including a simple expandable means or the like.
For purposes of an exemplary showing, pack 32 is illustrated in
FIG. 4 as being provided with a biasing spring plate 43, having a
body portion 43a affixed along wall 36 near bottom 34, as at 44.
Spring plate 43 extends substantially the length of nail pack 32
and has a free edge portion 43b which urges the upper portion of
the adjacent strips of nails toward the left as viewed in FIG.
4.
It would be possible to provide a second spring plate as shown in
broken lines in FIG. 4 at 43c, having a body portion 43d and a free
edge 43e. In such an instance, the body portions 43a of spring
plate 43 and 43d of spring plate 43e can have wide slots formed
therein (not shown) so that body portions 43a and 43d each comprise
a plurality of finger-like elements which can be interdigitated. It
will be noted that spring plate 43c is affixed to wall 36 near its
top. The free edge 43e of spring plate 43c engages the lower
portion of the adjacent strip of nails. It would also be possible
to simply substitute the spring plate 43c for spring plate 43.
It is desirable that that strip of nails 42a, nearest nail pack
wall 35 and aligned with guideway or channel 23 of magazine 5a be
slightly lower than the remainder of the nail strips. It will be
understood that since all of the nail strips are constantly urged
to the left as viewed in FIG. 4, they will be in contact with each
other. Head-to-head contact between nail strip 42a and 42b would
create greater friction against shifting of nail strip 42a toward
the tool drive track than if the heads of nail strip 42a ride
against the shanks of nail strip 42b. To better show the mechanism,
nails strips 42a and 42b are shown slightly separated in FIG. 4.
Normally, the heads of the nails of strip 42a would be contacting
the shanks of the nails of strip 42b.
To maintain nail strips 42b through 42g slightly highter than nail
strip 42a, the nail pack 32 may have a simple insert 45 affixed to
the inside surface of nail pack bottom 34. Insert 45 extends to the
left to a position short of nail pack wall 35 and is sloped as at
46 to enable each nail strip, in its turn, to achieve the lower
position in which nail strip 42a is illustrated. It will be
understood that the insert 45 could constitute an integral part of
nail pack 32, or the bototm wall 34 of nail pack 32 could be so
configured or molded as to provide the equivalent of insert 45.
The presence of magnetic rail 25 assures that nail strip 42a is
properly aligned with respect to the guideway or channel 23 of
magazine 5a. As shown, nail strip 42a contacts the magnetic rail 25
when in its proper horizontal position. To assure its proper
vertical position, as defined by contact of the nail heads of strip
42a against the upper surface of magnetic rail 25, the shim element
26 has an arcuate extension 26a which tends to cam nail strip 42a
into its proper vertical position. That portion of the tool body 2
ahead of opening 28 carries an additional plate 47 which has an
upturned end portion 48 coplanar with the top surface of magnetic
rail 25 and serving as a support for the other side of the nail
heads of strip 42a as they travel toward guide body 4 and the drive
track therein. Because of magnetic rail 25, pusher 10 and feeder
shoe member 11 should be made of non-magnetic material.
When nail strip 42a has been depleted, the next nail strip 42b will
assume its position under the urging of biasing element 43, shim
portion 26a and ramp 46. It is only necessary for the operator to
pull pusher element 10 back to its retracted position. The spring
biased pivoted member 11 of pusher element 10 will shift out of the
way to pass by the nail strip and then will snap into position to
engage the rearmost nail of the nail strip to advance it toward
guide body 4. This procedure is repeated until all of the nail
strips 42a through 42g are depleted. At this point, the nail pack
32 is removed from tool 1 and a new nail pack is inserted in its
place. If disposable, the original nail pack 32 is discarded. If
not disposable, it can be refilled.
While the nail pack and magazine assembly of the present invention
have thus far been described in terms of containing strips of
headed nails, it will be understood that strips of headless nails
would function in the same manner. With minor dimensional changes
and the like, the nail pack 32 could contain staples, blind rivets,
or other appropriate sticks or strips of fastener means.
The tool 1 of FIG. 1 is shown as being of the type wherein the
magazine 5 lies at an angle to the workpiece. Tools have been
developed and are well known wherein the magazine is not so angled,
but rather is substantially parallel to the workpiece when the tool
is used. It will be understood that the teachings of the present
invention could be equally well applied to such a tool. In such an
instance, the opening 28 in the magazine 5a and the body 2 would be
rectangular in configuration, rather than a parallelogram, as would
be the pack 32. Furthermore, in such an instance the heads of the
nails of the nail strip would not be vertically overlapped.
Similarly, in the tool of FIG. 1, the opening 28 and the pack 32
could be of rectangular configuration, rather than that of a
parallelogram. In such an instance, however, the nails of the nail
strips within the pack would lie at an angle as illustrated in the
embodiment of FIG. 14, to be described hereinafter.
Reference is now made ot FIGS. 10, 11 and 12, wherein another
embodiment of the present invention is illustrated. Again, the
embodiment is intended for use with a tool of the type illustrated
in FIG. 1. Furthermore, the magazine indicated at 5b, is in many
respects similar to magazines 5 and 5a. As a consequence of this,
where applicable, like parts have been given like index
numerals.
The left side 21 of magazine 5b is substantially identical to the
left side 21 of magazine 5a and to this end is provided with an
elongated flange 20 defining a slot 20a in which the lower portion
of pusher element 10 slidably rides. The left side of body 2 is
again substantially identical to that shown in FIG. 4, and is
provided with magnetic rail 25 and shim 26, having arcuate portion
26a. The upper portion of pusher element 10 engages and rides on
magnetic rail 25.
The right hand side 22 of magazine 5b terminates at edge 22a which
is equivalent to the inside surface of wall or trough portion 31 of
FIG. 3. The remainder of the magazine 5b does not have a right
side. The plate 8a, equivalent to plate 8 of FIG. 3, differs from
plate 8 in that the surface facing the viewer in FIG. 10
corresponds to the adjacent surface of magazine 5b, i.e., the inner
surface of magazine wall 21. The only other difference between
magazine 5b and magazine 5a is perhaps most clearly seen in FIG.
11. The lower edge of magazine 5b is provided with a central,
longitudinal slot 49.
The right hand side of body 2 is provided with an opening 28b
identical to the opening 28b of FIG. 3. Above opening 28b the body
2 has an integral longitudinal flange 50 which extends from the
rearward end of body 2 to a position just slightly beyond the
forward edge of opening 28b. The flange 50 defines a longitudinal
slot 51, the purpose of which will be apparent hereinafter.
FIG. 11 illustrates the magazine 5b provided with a nail pack 52 of
this embodiment. The nail pack, itself, is illustrated in FIG. 12.
Nail pack 52 comprises a container portion 52a and a cover portion
52b. The container portion comprises a side wall 53, a bottom wall
54, a top wall 55, and two substantially identical end walls, the
forward one of which is shown at 56. It will be understood that in
side elevation the pack 52 may have the configuration of a
parallelogram, the forward wall 56 and the rearward wall (not
shown) being parallel and sloping upwardly and rearwardly in a
fashion similar to forward and rearward walls 37 and 38 of FIG. 5.
The top 55 extends to about the center of the upper edge of the
forward wall 56 and the rearward wall (not shown) and terminates in
an upstanding hook-shaped element 57. The bottom 54 of container
portion 52a terminates in a downwardly depending hook-shaped
element 58. The cover portion 59 has a first part 60 which
constitutes the other side wall of pack 52. The bottom edge of part
60 is slidably engaged in the hook-shaped portion 58 of container
portion 52a. Cover portion 52b has a second part 61 constituting
the rest of the top of pack 52 and terminating in an upstanding
flange 62 slidably engagable in hook-shaped element 57 of container
portion 52a. With the cover portion 52b in place, as illustrated in
FIG. 12, nail strips (not shown) contained within pack 52 are fully
enclosed. Again, the pack 52 may be provided with an overwrap, or
the like (not shown), maintaining cover portion 52b in position on
container portion 52a during transport and storage.
The embodiment of FIGS. 10 and 11 having been described in detail,
its operation is as follows. Assuming that the tool 1 is empty of
nails, packs 52 is freed of its overwrap or the like and is caused
to approach tool 1 from the rear, with the hook-shaped portion 57
of pack 52 aligned with slot 51 of tool body 2 and the hook-shaped
portion 58 aligned with slot 49 of magazine 5b. Forward movement of
pack 52 is continued to cause hook-shaped pack element 57 to engage
tool body slot 51 and to cause hook-shaped pack element 58 to
engage in magazine slot 49. These engagements are sliding
engagements and continued forward movement of pack container
portion 52a along the side of tool 1 will displace pack cover
portion 52b. Once the rearward end of pack container portion 52a
clears tool plate 8a, the pack cover portion 52b will fall away and
can be appropriately disposed of.
Again it will be understood that pack elements 52a and 52b can be
made of any appropriate material including metal, cardboard,
plastic, or the like. The pack 52 lends itself well to being
disposable in nature, and when this is the case, it is preferred
that it be made of cardboard, plastic, or the like. It is within
the scope of the invention to make pack 52 refillable, if
desired.
The pack container portion 52a is shoved forwardly along the tool
body 2 and magazine 5b until it is stopped by the forward ends of
slots 51 and 49. At this point, the pack container portion 52a is
in its proper position. Any appropriate form of releasable latch
means (not shown) may be provided to releasably maintain pack
container portion 52a in its proper position.
For purposes of an exemplary showing, the pack 52 of FIG. 11 is
illustrated as containing six nail strips 63a through 63f. The pack
52 can be appropriately dimensioned to contain a greater or lesser
number of strips, as desired. Again, pack 52 is provided with a
biasing means to urge the adjacent nail strip 63a into abutment
with magnetic rail 25 and into alignment with the channel or
guideway 25 of magazine 5b. The biasing means may be of any
appropriate type. To this end, biasing means 64 is shown,
substantially identical to biasing means 43 of FIG. 4. The other
spring arrangements described with respect to FIG. 4 could be
applied to the embodiment of FIG. 11.
Once in place, the operation of the magazine and nail pack assembly
of FIG. 11 is otherwise identical to that described with respect to
the embodiment of FIG. 4. When the pack 52 has been emptied, it is
shifted rearwardly along tool 1 until released therefrom, and a new
pack may be applied to the tool in the manner described above.
While nail pack 52 has been described as being of parallelogram
shape in side elevation, it can be of rectangular configuration,
for use with a tool the magazine of which is horizontal to the
workpiece when in position to fire. The nail pack 52 may also be of
rectangular configuration for use with the tool of FIGS. 1 and 10.
This would necessitate, however, modification of the size and
position of opening 28b and magazine edge 22a, as well as the
length of flange 50 and its slot 51. This would further necessitate
arrangement of the nail strips within pack 52 in a manner similar
to that illustrated in FIG. 14.
Finally, as in the case of nail pack 32 of FIG. 4, nail pack 52
could contain headless nails or other appropriate fastening means
such as sticks of staples, strips of blind rivets, or the like.
As indicated above, there are those fastener driving tools which,
instead of using a feeder shoe, have means in association with the
guide body to pull the strip of fasteners into the drive track.
Again, this is exemplified by the above noted U.S. Pat. No.
3,945,551. The teachings of the present invention are applicable to
such tools as well. This is illustrated, for example, in FIGS. 13
and 14. FIGS. 13 and 14 are respectively a side elevational view
and a plan view of a nail pack 65 containing a plurality of nail
strips 66a through 66f. The nail pack 65 is diagrammatically
indicated in broken lines. The pack 65 may be of the type described
with respect to FIG. 4 or of the type described with respect to
FIG. 11. For purposes of an exemplary showing it is illustrated as
being of the type described with respect to FIG. 4. For purposes of
an exemplary showing only, the nail pack 65 is illustrated as being
rectangular in side elevation with the nails of each strip being
oriented at an angle to the vertical. Depending upon the nature of
the tool being used, the nails could be oriented vertically as
viewed in FIGS. 13 and 14, as will be understood by one skilled in
the art.
The nails of each strip may be joined together by any appropriate
and well known means. For purposes of an exemplary showing, they
are illustrated as being joined together by pairs of tape elements
67.
In this instance, each nail strip is identical and each is provided
with a forward hook-like element 68 and an oppositely oriented
rearward hook-like element 69. These hook-shaped elements may be
bonded to the tape or otherwise appropriately affixed thereto and
may be made of flexible paper, plastic, or the like. Where the
nails are angled as in FIGS. 13 and 14, the hook-shaped elements
may be correspondingly angled, as shown in FIG. 13.
Nail pack 65 is shown as having a top wall 70, a bottom wall 71, a
rearward end 72, a forward end 73 and side walls 74 and 75. Side
wall 74 extends only part way up toward top 70, as is the case of
side wall 35 of nail pack 32. It will be understood that the
forward end 73 of the nail pack will have a vertical opening 73a
therein for passage of the nail strips into the guideway or channel
of the magazine. The rear wall 72, however, need not have a notch
formed in it, equivalent to notch 39 of FIG. 7, since there will be
no pusher element to provide clearance for. Finally, the nail pack
65 will contain some sort of appropriate biasing means to
constantly urge nail strips 66a through 66f toward the partial side
wall 74.
Once the operator has appropriately associated the nail pack 64
with the tool magazine, it is only necessary to advance the first
nail strip 66a in the direction of arrow A through the nail pack
opening 73a to the channel or guideway of the magazine and into
engagement with the forward pulling or advancing means. This can be
accomplished by an appropriate tool or simply by inserting a finger
in the space between the magazine and the tool body and into the
longitudinal opening of the nail pack 65 defined by nail pack top
70 and the upper edge of side wall 74, and manually shoving the
nail strip 66a forwardly. From this point on, feeding of the nail
strips is automatic until nail pack 65 is empty.
The forward hook 68 of nail strip 66a is not used. It will simply
distort out of the way. When the nail strip 66a has been advanced
to the point where it is nearly removed from nail pack 65, the
rearward hook 69 of nail strip 66a will engage the forward hook 68
of nail strip 66b initiating forward movement of nail strip 66b.
The nail pack 65 may be provided with an internal cam surface 76,
acting in conjunction with the nail strip biasing means (not shown)
to cause the strip 66b to shift into serial alignment with strip
66a. Achieving this alignment will distort the engaged forward and
rearward hook elements 68 and 69, but clearances are such as to
prevent their disengagement from each other. This procedure will
repeat until each of the nail strips 66b through 66f have been
pulled from nail pack 65, the rear hook element of each nail strip
engaging the forward hook element of the next nail strip.
Obviously, the rear hook element of nail strip 66f will not be
used, but it will simply distort out of the way as nail strip 66f
passes into the channel or guideway of the magazine.
FIGS. 15, 16, and 17 illustrate yet another embodiment of nail
strip for use with a tool having pulling-type nail strip
advancement means. In this instance, a strip of nails is shown in
FIG. 15. For purposes of an exemplary showing, the nails are
illustrated as being vertically oriented, rather than sloped as in
FIG. 13. It will be understood that they could be so sloped, if
desired. In this instance, the nail strip generally indicated at 77
is made up of a plurality of nails 78 by a pair of tape elements 79
and 80. At the position of the forwardmost nail of nail strip 77, a
window or opening 81 is formed in the tapes. It will be understood
that each nail strip will have, at its forward end, such a window
81.
FIG. 16 illustrates nail strip 77 together with a preceding nail
strip generally indicated at 82 and comprising a plurality of nails
83 joined together by tapes 84 and 85. The rearward end of nail
strip 82 is shown in FIG. 16 and is provided with a flexible
hook-like element 86. The rearward ends of all of the nail strips
will be provided with similar hook-like elements. As is apparent
from FIG. 6, as the flexible hook-like element of nail strip 82
reaches the forward end of the next succeeding nail strip 77, the
hook-like element 86 will enter through the windows 81 and engage
the shank of the first nail of nail strip 77. When the nail strip
77 shifts into alignment with the preceding nail strip 82, the
hook-like element 86 will distort in the manner shown in FIG. 17,
maintaining its engagement of forwardmost nail 78 of nail strip
77.
Modifications may be made in the invention without departing from
the spirit of it.
* * * * *